The structure of the time-dependent interstellar shocks and grain destruction in the interstellar medium

Details The structure of the time-dependent interstellar shocks and grain destruction in the interstellar medium The structure of the time-dependent interstellar shocks and grain destruction in the interstellar medium

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...318..674m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 318, July 15, 1987, p. 674-701.

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Cosmic Dust, Hydrodynamic Equations, Interstellar Matter, Shock Wave Propagation, Computational Astrophysics, Grain Size, Nebulae, Supernova Remnants, Time Dependence

Scientific paper

A new theoretical analysis of the structure of interstellar shocks and the grain dynamics of these shocks is presented. The basic hydrodynamic equations for J-shocks in interstellar gas are given in which shock-driving pressure is allowed to be weakly time-dependent and the grains are treated as a separate two-dimensional fluid. Specific equations for the grain dynamics in the cooling postshock gas are derived. An analytic theory for the propagation of a shock driven into an interstellar cloud by the blast wave of a supernova remnant which sweeps over the cloud is developed. An improved calculation of the grain charge in postshock gas is described, giving a simple analytic approximation for the results. The consequences of including these processes in the numerical code of Seab and Shull (1983) are addressed, including the effect of realistic magnetic fields in low-density gas.

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